// nav images

var nav_about_off = new Image();
nav_about_off.src = 'images/nav_about.gif';
var nav_about_over = new Image();
nav_about_over.src = 'images/nav_about_over.gif';

var nav_academics_off = new Image();
nav_academics_off.src = 'images/nav_academics.gif';
var nav_academics_over = new Image();
nav_academics_over.src = 'images/nav_academics_over.gif';

var nav_ourCommunity_off = new Image();
nav_ourCommunity_off.src = 'images/nav_ourCommunity.gif';
var nav_ourCommunity_over = new Image();
nav_ourCommunity_over.src = 'images/nav_ourCommunity_over.gif';

var nav_admissions_off = new Image();
nav_admissions_off.src = 'images/nav_admissions.gif';
var nav_admissions_over = new Image();
nav_admissions_over.src = 'images/nav_admissions_over.gif';

var nav_getInvolved_off = new Image();
nav_getInvolved_off.src = 'images/nav_getInvolved.gif';
var nav_getInvolved_over = new Image();
nav_getInvolved_over.src = 'images/nav_getInvolved_over.gif';

function rollOn(imgname) {
	if (imgname == "") {
		return;	
	}
	if (document.images) {
	  	document.images[imgname].src = eval(imgname + '_over.src');
  	} 
}
    
function rollOff(imgname) {
	if (imgname == "") {
		return;	
	}
	if (document.images) {
  		document.images[imgname].src = eval(imgname + '_off.src');
  	} 
}

function rollOnById(imgname) {
	if (imgname == "") {
		return;	
	}
  	document.getElementById(imgname).src = eval(imgname + '_over.src');
}
    
function rollOffById(imgname) {
	if (imgname == "") {
		return;	
	}
	document.getElementById(imgname).src = eval(imgname + '_off.src');
}